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Simple Mail Transfer Protocols (SMTP)
The application layer protocols for electronic mail is SMTP( Simple mail transfer protocols).
Internet electronic mail has many components including mail services that house user mailboxes mail readers that allow users to read and write messages a standard for defining the structure of an e mail message and application layer protocols. Thais define how messages are passed between servers, how message are passed between servers and mail readers, and how the contents of certain parts of the mail message ( for example a mail message header) are to be interpreted.
Consider a signal x(t) = 10 cos(2πfct + 4 cos 2πfmt). Assume frequency modulation. The message frequency fm = 2:3 kHz. Calculate the modulation index and find the bandwidth when
Describe the term - stateful implies The term stateful implies that the firewall is wakeful and is capable of remembering the state of each session of packet exchange across it
There are two types of ends in WAN (1)DTE (DATA TERMINAL EQUIPMENT) (2)DCE(DATA COMMUNICATION EQUIPMENT)
What is Error Detection? What are its methods? Data can be corrupted during transmission. For reliable communication errors must be deducted and corrected. Error Detection uses
LAN HARDWARE AND PACKET FILTERING: The diagram below explain the LAN hardware LAN INTERFACE: LAN interface operates all details of frame reception and transmis
State about the communications network 1) The communications network may only accept blocks of data up to a specific size. (2) Error control might be more effective with a
What is Star topology Each station is directly connected to a common central node. Typically, each station attaches to a central node via two point-to-point links, one for tran
How Intranet is different from Internet? Generally an Intranet is different from an Internet in the following ways: i. Intranet is a network within the organisation whereas
Discuss the interdependence of networking hardware and software. Is it possible to have one without the other?
CAUSES OF FAILURES Every failure has a well-defined cause. Any system or device has an inherent strength or capacity to resist failures. This depends on design, material, man
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